2-part PUR highly elastic, crack-bridging coating

Transcription

1 Product Data Sheet Edition 15/08/2006 Identification no: part PUR highly elastic, crack-bridging coating Construction Product Description Uses Characteristics / Advantages Test Sikafloor -350 Elastic is a two part, solvent free, highly elastic polyurethane resin. For highly elastic, crack bridging, trafficable, slip resistant wearing layers For car park decks, garage floors and bridges etc. Very good crack-bridging ability even at low temperatures (down to -20 C) Mechanically resistant as a broadcast system Watertight Economical in use Solvent free Approval / Standards Conforms to the German Standard DafStb Rili-SIB 2001 OS 11a and OS 11b. Product Data Form Conforms to the requirements of DIN /14 for Class B1 (combustibility classification for floorings), Report-No a, FMPA Stuttgart, Germany, May Appearance / Colours Resin - part A: transparent, liquid Hardener - part B: light brown, liquid Packaging Part A: 9 kg Part B: 18 kg Part A+B: 27 kg ready to mix units Storage Storage Conditions / Shelf-Life 12 months from date of production if stored properly in undamaged original packaging in dry and cool conditions at temperatures between +5 C and +30 C. Technical Data Chemical Base Polyurethane Density Part A: ~ 1.60 kg/l Part B: ~ 1.03 kg/l Part A+B: ~ 1.16 kg/l Solid Content ~ 100% (by volume) / ~ 100% (by weight) 1 1/6

2 Mechanical / Physical Properties Tensile Strength ~ 3.5 N/mm 2 (DIN 53504) Shore A Hardness 70 (DIN 53505) Elongation at Break ~ 270% (DIN 53504) Crack-Bridging Capacity ~ 0.3 mm at -20 C (static and dynamic) Resistance Thermal Resistance Exposure* Permanent Short-term max. 7 d Short-term max. 12 h *No simultaneous chemical and mechanical exposure. Dry heat +50 C +80 C +100 C System Information System Structure Car park deck coating systems (according to DAfStb Rili-SIB 2001): Car park decking system OS 11a: Primer: Sikafloor -156 lightly broadcast with quartz sand mm Base coat: Sikafloor -350 Elastic Wearing course: Sikafloor -355 N (filled with 20% quartz sand mm) Broadcast to excess with quartz sand mm Seal coat: Sikafloor -354 (with 1% - 5% Thinner C) Car park decking system similar to OS 11b: Primer: Sikafloor -156 lightly broadcast with quartz sand mm Wearing course: Sikafloor -350 Elastic (filled with 20% quartz sand mm) Broadcast to excess with quartz sand mm Seal coat: Sikafloor -354 For application on inclined / sloping surfaces: Use the same systems as described with the addition of Sika Extender T as stated below. Application Details Consumption / Dosage Car park deck system OS 11a Coating System Product Consumption Primer (lightly blinded) Sikafloor -156 Quartz sand mm kg/m 2 ~ 0.8 kg/m 2 Base coat Sikafloor -350 ~ 2.2 kg/m 2 Wearing course Sikafloor -355 N filled Broadcast to excess with quartz sand mm ~ 1.86 kg/m 2 (1.55 kg/m 2 binder kg/m 2 filler) 6-8 kg/m 2 Seal coat Sikafloor -354* kg/m 2 2 2/6

3 Car park deck system similar to OS 11b Coating System Product Consumption Primer (lightly blinded) Sikafloor -156 Quartz sand mm Wearing course Sikafloor -350 Elastic filled Broadcast to excess with quartz sand mm kg/m 2 ~ 0.8 kg/m 2 ~ 2.4 kg/m 2 (2.0 kg/m 2 binder kg/m 2 filler) 6-8 kg/m 2 Seal coat Sikafloor -354* kg/m 2 *Sikafloor -354 can be diluted with Thinner C up to 5 wt.-%. For application on sloping surfaces Substrate Quality Slope (%) Extender T (wt. -%, related to Sikafloor -350 Elastic at +20 C These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level or wastage etc. Concrete substrates must be sound and of sufficient compressive strength (minimum 25 N/mm 2 ) with a minimum pull off strength of 1.5 N/mm 2. Substrate Preparation The substrate must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments, etc.. If in doubt, apply a test area first. Concrete substrates must be prepared mechanically using abrasive blast cleaning or scarifying equipment to remove cement laitance and achieve an open textured surface. Weak concrete must be removed and surface defects such as blowholes and voids must be fully exposed. Repairs to the substrate, filling of blowholes/voids and surface levelling must be carried out using appropriate products from the Sikafloor, Sikadur and Sikagard range of materials. The concrete or screed substrate has to be primed or levelled in order to achieve an even surface. High spots must be removed by e.g. grinding. All dust, loose and friable material must be completely removed from all surfaces before application of the product, preferably by brush and/or vacuum. Application Conditions / Limitations Substrate Temperature Ambient Temperature Substrate Moisture Content Relative Air Humidity Dew Point +10 C min. / +30 C max. +10 C min. / +30 C max. < 4% pbw moisture content. Test method: Sika -Tramex meter, CM - measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet). 80% r.h. max. Beware of condensation! The substrate and uncured floor must be at least 3 C above the dew point to reduce the risk of condensation or blooming on the floor finish. 3 3/6

4 Application Instructions Mixing Mixing Time Mixing Tools Application Method / Tools Cleaning of Tools Potlife Part A : part B = 1 : 2 (by weight) Prior to mixing, stir part A mechanically. When all of part B has been added to part A, mix continuously for 2 minutes until a uniform mix has been achieved. For the addition of quartz sand: When parts A and B have been mixed, add the quartz sand mm and mix for a further 2 minutes until a uniform mix has been achieved. To ensure thorough mixing pour materials into another container and mix again to achieve a consistent mix. Over mixing must be avoided to minimise air entrainment. Sikafloor -350 Elastic must be thoroughly mixed using a low speed electric stirrer ( rpm) or other suitable equipment. Prior to application, confirm substrate moisture content, r.h. and dew point. If > 4% pbw moisture content, Sikafloor EpoCem may be applied as a T.M.B. (temporary moisture barrier) system. Broadcast wearing course: Sikafloor -350 Elastic is poured and spread evenly by means of a serrated / notched trowel. Then, level and remove entrained air with a spiked roller. After about 10 minutes (at +20 C) but before 30 minutes (at +20 C), broadcast with quartz sand, at first lightly and then to excess. At temperature > 25 C broadcast immediately. Clean all tools and application equipment with Thinner C immediately after use. Hardened and/or cured material can only be removed mechanically. Temperatures +10 C +20 C +30 C Time ~ 80 minutes ~ 40 minutes ~ 20 minutes Waiting Time / Overcoating Before applying Sikafloor -350 Elastic on Sikafloor -156 allow: Substrate temperature Minimum Maximum +10 C 24 hours 3 days +20 C 12 hours 2 days +30 C 6 hours 1 day Before applying Sikafloor -355 N on Sikafloor -350 Elastic allow: Substrate temperature Minimum Maximum +10 C 24 hours 48 hours +20 C 15 hours 24 hours +30 C 8 hours 16 hours Before applying Sikafloor -354 on Sikafloor -350 Elastic broadcast allow: Substrate temperature Minimum Maximum +10 C 24 hours * +20 C 15 hours * +30 C 8 hours * * No max. waiting time if fully broadcast surface is free from all contaminations. Times are approximate and will be affected by changing ambient conditions particularly temperature and relative humidity. 4 4/6

5 Notes on Application / Limitations Do not apply Sikafloor -350 Elastic on substrates with rising moisture. Freshly applied Sikafloor -350 Elastic must be protected from damp, condensation and water for at least 24 hours. Avoid puddles on surface with the primer. Uncured material reacts in contact with water (foaming). During application care must be taken that no sweat drops into fresh Sikafloor -350 Elastic (wear head and wrist bands). The incorrect assessment and treatment of cracks may lead to a reduced service life and reflective cracking. If heating is required do not use gas, oil, paraffin or other fossil fuel heaters, these produce large quantities of both CO 2 and H 2 O water vapour, which may adversely affect the finish. For heating use only electric powered warm air blower systems. Curing Details Applied Product ready for use Value Base Temperature Foot traffic Light traffic Full cure +10 C ~ 24 hours ~ 5 days ~ 10 days +20 C ~ 15 hours ~ 3 days ~ 7 days +30 C ~ 8 hours ~ 2 days ~ 5 days Note: Times are approximate and will be affected by changing ambient conditions. All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control. Local Restrictions Please note that as a result of specific local regulations the performance of this product may vary from country to country. Please consult the local Product Data Sheet for the exact description of the application fields. Health and Safety Information Legal Notes For information and advice on the safe handling, storage and disposal of chemical products, users should refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data. The information, and, in particular, the recommendations relating to the application and end-use of Sika products, are given in good faith based on Sika's current knowledge and experience of the products when properly stored, handled and applied under normal conditions in accordance with Sika s recommendations. In practice, the differences in materials, substrates and actual site conditions are such that no warranty in respect of merchantability or of fitness for a particular purpose, nor any liability arising out of any legal relationship whatsoever, can be inferred either from this information, or from any written recommendations, or from any other advice offered. The user of the product must test the product s suitability for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request. 5 5/6

6 CE Labelling The harmonized European Standard EN Screed material and floor screeds - Screed materials - Properties and requirements specifies requirements for screeds material for use in floor construction internally. Structural screeds or coatings, i.e. those that contribute to the load bearing capacity of the structure, are excluded from this standard. The resin floor systems as well as screeds fall under this specification. They have to be CE-labelled as per Annex ZA. 3, Table ZA.1.5 and 3.3 and fulfil the requirements of the given mandate of the Construction Products Directive (89/106): Construction 04 1) EN SR-B1,5-AR1-IR 4 Sika Limited Watchmead Welwyn Garden City Hertfordshire AL7 1BQ United Kingdom Resin screed/coating for indoors in buildings (systems as per Product Data Sheet) Reaction to fire: E fl 2) Release of corrosive substances (Synthetic Resin Screed): SR Water permeability: 3) Abrasion Resistance: AR1 4) Bond strength: B 1,5 Impact Resistance: IR 4 Sound insulation: Sound absorption: Thermal resistance: Chemical resistance: 1) Last two digits of the year in which the marking was affixed. 2) In Germany, DIN 4102 still applies. Passed class B2. 3) No performance determined. 4) Not broadcast with sand. EU Regulation 2004/42 VOC - Decopaint Directive According to the EU-Directive 2004/42, the maximum allowed content of VOC (Product category IIA / j type sb) is 550 / 500 g/l (Limits 2007 / 2010) for the ready to use product. The maximum content of Sikafloor -350 is < 500 g/l VOC for the ready to use product. Sika Limited Watchmead Welwyn Garden City Hertfordshire AL7 1BQ United Kingdom Phone Telefax sales@uk.sika.com ISO ISO /6